The Petroff is a solid opening. This opening is therefore a good choice for players who like it when the adventures in a game of chess do not start immediately, but first have the opportunity to develop their own pieces in peace. Once this has happened, the game should continue building on this solid foundation.
Very often in games with the Petroff, the player who has a better understanding of chess and can calculate better has a much better chance of success. In the Petroff it is hardly possible to compensate for such gaps with theoretical knowledge.
The Petroff is therefore ideally suited to players who want to work not only on their opening, but also on their chess as a whole. In such cases, however, the Petroff is also a rewarding opening, as it is a reliable way of aiming for positions in which it is important to play better chess.
Want to learn this opening? You can find specialised opening training courses here: Petroff Defence (chessbase.com)